[Pitch] Amend Iterable proposal with additional 'skip(by:)'

Hello, friends of borrowing iteration! I have a small amendment to the SE-0516: Iterable proposal, which adds a single overload of the skip(by:) method to BorrowingIteratorProtocol. Amendment PR: Amendment to add additional 'skip(by:)' method by natecook1000 · Pull Request #3487 · swiftlang/swift-evolution · GitHub Implementation PR: [stdlib] Add `skip(by: inout Int)` method to borrowing iterator protocol by natecook1000 · Pull Request #92109 · swiftlang/swift · GitHub The existing skip(by:) ...